The other nations called to praise Jehovah

Psalm 117 is the calling the other nations and peoples to come
and praise Jehovah, who will be now King over all the earth. They
join and are brought happily into this relationship, Jehovah being
made known to them by His ways with Israel. Merciful kindness is
here, as ever, first; and truth enduring for ever, which no failure
has made to fail. This, as the last, is a hallelujah.